how do chloroplasts move around the cell

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Answers:Cytopolasmic streaming is when the chloroplasts move around in the cytoplasm. They actually are travelling along tracks made of the microtubules from the cytoskeleton. There are "motor proteins" associated with these tracks that help move things around.

Question:another question for lab report...when we looked at the spirogyra plant cell in .9% NaCl the chloroplasts were moving around edge of cell and i think its so the salt will get evenly distributed??

Answers:The movement of chloroplasts around the inside of the cell is called "cytoplasmic streaming", and is a way to ensure that all of the chloroplasts are exposed to sunlight, maximizing the efficiency of photosynthesis. Otherwise, the chloroplasts on the side of the cell away from the sunlight would be shaded by the cell's organelles.

Question:I've been thinking about this question for awhile, and I don't really get what it's referring too...help?
Thanks!

Answers:Light is constantly being absorbed by the chloroplasts. But each chloroplast can only absorb so much light. Once a chloroplast is at maximum capacity, the light will penetrate to the other chloroplast and cells.

Question:how does one go about comparing and contrasting the two organelles? does anyone have a table?

Answers:Although mitochondria and chloroplasts are enclosed by membranes, they are not part of the endomembrane system. In contrast to organelles of the endomembrane system, each of these organelles has at least two membranes separating the innermost space from the cytosol. Their membrane proteins are made not by the ER, but by free ribosomes in the cytosol and by ribosomes contained within these organelles themselves. Not only do these organelles have ribosomes, but they also contain a small amount of DNA (which supports the endosymbiotic theory). It is this DNA that programs the synthesis of the proteins made on the organelle s own ribosomes. (Proteins imported from the cytosol constituting most of the organelle s proteins are programmed by nuclear DNA.) Mitochondria and chloroplasts are semiautonomous organelles that grow and reproduce within the cell. Both also make ATP.

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The Revolution of Planets around the Sun, explained simply! :Ever wondered why & how the planets revolve around the Sun and why do some planets revolve faster than others? Check this amazing video taken at the Lowell Observatory in Flagstaff, Arizona. This is what the actual description said - "Massive objects like the Sun have a gravitational field. The larger the object, and the closer you are to it, the stronger its gravity. This display simulates the motion of the planets in a gravitational field. Imagine the Sun lies in the hole at the center. The coin you drop is an idealized orbiting planet, and the steepness of the well represents the increasing gravitational pull of the Sun as you get closer to it. Watch the speed of the coin as it gets closer to the Sun. Planets close to the Sun, like Mercury, must travel rapidly to avoid spiraling into the Sun. On the other hand, planets farther away, like Pluto, orbit where the Sun's gravitational field is weaker and move more slowly. For some more photos from the Lowell Observatory please keep on clicking the next photo button after clicking on the below Picasa link - picasaweb.google.com